> For the complete documentation index, see [llms.txt](https://docs.cooku222.kr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cooku222.kr/security/web-hacking/suninatas/suninatas-game-01.md).

# \[SuNiNaTaS] Game 01

문제 출처 : <http://suninatas.com/challenge/web01/web01.asp>

***

<figure><img src="https://blog.kakaocdn.net/dna/dCzHgh/dJMcahiu5mF/AAAAAAAAAAAAAAAAAAAAAFkTFOiMVI87lMUhyzeamhnYU8SjZB2XF6HD8UYo4Dfz/img.png?credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&#x26;expires=1782831599&#x26;allow_ip=&#x26;allow_referer=&#x26;signature=js%2BMQ%2FMgQLfrBjpgZiUdIP5okTc%3D" alt="" height="656" width="660"><figcaption></figcaption></figure>

여기서 Request는 값을 받아오고 Replace는 문자를 바꿔주는 함수이다.

a -> aad로 치환되고 i -> in으로 치환된다.\
str값에 ami를 넣어주면 Replace(str, "a", "aad")에서 aadmi가 된 후, Replace(result, "i", "in")에서 aadmin가 된다.\
result1 = Mid(result,2,2)에서 ad, result2 = Mid(result,4,6)에서 min (4번째 문자열에서 6글자를 추출하는 것으로, 어차피 뒤에 글자가 없으니 n까지만 나온다.)

따라서 admin이 되어 Authkey를 획득할 수 있고,&#x20;

<figure><img src="https://blog.kakaocdn.net/dna/bkbySy/dJMcaap8ZVy/AAAAAAAAAAAAAAAAAAAAAGM4w5Fl7UqksXkHluotq9v_5K6RMyV4eWRBBUYKc1TI/img.png?credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&#x26;expires=1782831599&#x26;allow_ip=&#x26;allow_referer=&#x26;signature=tnUsfUPQVht4lQOa8t2GUC9B5No%3D" alt="" height="185" width="570"><figcaption></figcaption></figure>

위와 같이 팝업창이 뜬다.&#x20;

<figure><img src="https://blog.kakaocdn.net/dna/05kg1/dJMcahiu5tX/AAAAAAAAAAAAAAAAAAAAAFAynvOrxPSnCZAQ26DFqq_izP-Bv9PzuzA1kxX-Sdz6/img.png?credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&#x26;expires=1782831599&#x26;allow_ip=&#x26;allow_referer=&#x26;signature=uEU52kHs84z3ntoayhdGuEC%2FBwg%3D" alt="" height="83" width="420"><figcaption></figcaption></figure>

인증란에 넣어주면 해결되었다 뜨게된다.&#x20;

<br>


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